I broke something on my 2007 chevy Tahoe. Can anyone tell me what this part is that I have attached to this thread? Its a black hose above the motor with a green cap that has a release valve of some sort. Its next to the fuel line above the motor if you are looking at the motor it's on the right side.

 

The thing it's attached to is the vapor canister solenoid purge valve. I'm not sure what the actual connector with the green cap would be called and I can't find it on a parts diagram. Hopefully that helps some.